Double thermostatic control of explosive mixtures.



W. J. HENLEY, JR. 1

DOUBLE THERMOSTATIC CONTROL OF EXPLOSIVE MIXTURES.

APPLICATION FILED FEB. 16. 19M.

1,286,621, Patented Dec. 3, 1918.

M WilliamIHQnley, J'r,

res.

WILLIAM J. HENLEY, JR., 0]? INDIANAPOLIS, INDIANA.

DOUBLE THERMOSTATIC CONTROL OF EXPLOSIVE MIXTURES.

Specification of Letters Patent.

Patented Dec. 3, 1918.

Application filed. February 16, 1917. Serial No. 149,122.

To all whom it may concern:

Be it known that I, WILLIAM J. HENLEY, Jr., a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Double Thermostatic Control of Explosive Mixtures, of which the following is a specification.

Itis the object of my invention to control the proportion of air and fuel in an explosive mixture for an internal combustion engine by the heat of the cooling water for the engine and by the temperature, of the air jointly. It is my further object to provide a special form of mounting for the fuel-controlling needle whereby the needle may be moved easily without possibility of leakage.

The accompanying drawing illustrates my invention. Figure 1 is a vertical sectional view through a carbureter and controlling apparatus embodying my invention, showing the carbureter somewhat diagrammatically;-Fig. 2 is a section on the line Fig. 1; and Fig. 3 is an elevation of the needle-lifting cams with fragments of the associated parts.

The carburetor is shown as having a lateral air inlet 10 which leads to the vertical carbureting conduit 11 in which is located the usual throttle 12 for controlling the supply of carbureted air from the carburetin-g conduit 11 to theassociated engine. At the bottom Of'the carbureting conduit 11 is the fuel nozzle 13, which is supplied with fuel from any usual float tank '14. This form of carbureter is shown merely for simplicity, and is not essential to my invention.

The outlet of the fuel nozzle 13 is controlled by'a needle 15 which has a screwthreaded mounting in a sleeve 16 through which it extends. the needle being provided with an adjusting head 17 at the bottom. The sleeve 16 is connected to the lower end of the nozzle member 13 by a capsule formed of two diaphragms 18 which are connected together at their peripheries and to the lower end of the nozzle member 13 and to a flange 19 at the upper end of the sleeve 16 respectively. These diaphragms are sufliciently flexible so that the sleeve 16 may move relatively to the nozzle 13. The diaphragms form a tight joint with each other and with the nozzle member 13 and flange 19, so that while the needle 15 may slide in the lower end of the nozzle member 13 and fuel may pass around the needle between such nozzle member and such capsule leakage to the outside is effectively prevented. A gland and packing 20 may be provided at the lower end of the sleeve 16 around the needle 15.

Mounted on a boss 25 at the lower end of the main body of the carbureter, through which boss the nozzle member 13 projects, is a supporting frame 26 in which the capsule formed by the diaphragms 18 is located. In a bearing 27 in the lower end of the frame 26 is mounted a sleeve 28, the upper end of which is provided with a flange 29 which rests upon the upper surface of the bearing 27 and in turn supports the flange 19. The engaging surfaces of the flange 19 and 20 are made in the form of helical cams 30, so that by turning the sleeve 28 in the bearing 27 the sleeve 19 and therefore the needle 15 is raised or lowered. as is clear from Fig. 3.

In order to turn the sleeve 28, it is provided with a laterally extending arm 3] which is connected, by a link 32 and a ball and socket connection 33 to an expansible thermostatic capsule 34- also supported on the frame 26. Near the thermostatic capsule 34 the frame 26 is provided with a chamber 35 which is connected. preferablv by inlet and outlet pipes 36 and 37. to the watercooling system of the associated engine, so that the water from such cooling system will circulate through such chamber. The capsule 34 is provided with a hollow extension 38 located within the chamber 35. As shown this hollow extension 38 is considerably enlarged. but this is not necessary. The capsule 34 is outside the chamber 35. and is so located that it is exposed to the temperature of the surrounding air. though it is not necessarv that it be exposed directly to the air itself as illustrated.

As a result the expansion and contrzvtion of the capsule 34 is in part dependent upon the temperature of the air and in part dependent upon the temnerature'of the cooling water in the chamber 35. An increase in the temperature of either causes the expansible fluid 39 which is contained in the capsule 34 and its extension 38 to expand, forcing the link32 to the left (Fig. 1), and a decrease in the temperature of either causes such fluid to contract to draw the link 32 to the right. Thus an increase in the temperature of either the air or the coolfuel.

surfaces 30 cause the sleeve 16 to belowered ,to lower the needle 15 and thereby increase the supply of fuel discharged from the nozzle 13, thus decreasing the roportion of air in the explosive mixture. Ey this joint control by the temperatures of both air and cooling water, a very exact proportioning of the air and fuel to suit different conditions may be obtained.

I have shown my invention in one sim le embodiment, with the thermostatic mem er formedby the capsule 34 controlling the It is not essential, however, that the control be on the fuel, as it is sufficient if it controls in any way the relative proportions of air and fuel in the mixture. Neither is it essential to use the precise form of thermostat shown.

I claim as my invention:

1. In combination, a carbureted air con.

duit, a valve for controlling the relative proportions of air and fuel in the carbureted air, and an expansible thermostatic capsule for controlling said valve, said capsule having two separated portions subject respectively to the temperature of the air supply and to the temperature of the device supplied by said conduit;

2. In combination, a conduit for carbureted air, a valve controlling the relative proportions of'air and fuel in the carbureted air, and an expansible thermostatic capsule controlling said valve and having two separated portions subject respectively to the temperature of the air supply and to fuel nozzle,

comprising two liquid-containiltiig the temperature of the water in the watercooling system of an associated engine.

3. In combination, a carbureter having a a needle valve controlling the discharge of fuel from said nozzle, a sleeve in which said needle valve is adjustably mounted, a cam cooperating with said sleeve for raising and lowering 1t and the needle valve therewith, a thermostat operatively connected to said cam, and an expansible capsule connecting said sleeve and said nozzle so as to permit free relative movement y between them without leakage.

4. In combination, acarbur'eter having a needle valve, a conduit carrying the coolingwater for the engine associated with sai carbureter, and a thermostatic member connected to said needle valve so as to adjust it automatically, said thermostatic member comprising twoliquid-containing parts one of which is mounted within said conduit so as to be subject to the temperature of the cooling water and the other ofwhich is mounted outside said conduit sponsive to the air supply.

5. .In combination, a carburetor having a needle valve, a conduit carrying the cooling water for the engine. associated with said carbureter, and a thermostatic member connected to said needle valve so as to adjust it automatically, said thermostatic member parts one of which 15 mounted within sai conduit so as to be subject to the temperature of the cooling water and the other of .which is mounted outside said conduit so as to be responsive to the air supply, said two liquidcontaining parts having a liquid connection between them and the first of said parts being substantially inexpansible while the second is readily expansible. v

In witness whereof, I have hereunto set so as to be rehundred and seventeen.

' WILLIAM J. HENLEY, JR. 

